Welcome to the Community!
First, the incident number has been removed from your post. Volunteers in this forum - GoDaddy customers like yourself - have no access to internal GoDaddy escalations.
Your website is resolving for me in several browsers. 503 errors are almost always due to hitting the physical memory (RAM) limit for the account; something on your website or databases are too large of a draw with multiple visitors. If using WordPress hosting, you may want to confirm that the native caching is enabled (through customer support) and review your image sizes and database connection length.
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